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hirondelle52

Bonsoir;

a) 4x+8=x-1

4x-x = -1-8

3x = -9

x = -9/3

x = -3

b) 5x+1=-2+3x -3

5x-3x = 2-3-1

2x = 2-4

2x = -2

x = -2/2

x= -1

c) 3x-1 =2(x+1)

3x-1= 2x+2

3x-2x = 2+1

x = 3

d) 4(x+1) -5=6x+5

4x+4 -5 = 6x+5

4x-1 = 6x+5

-1-5 = 6x-4x

-6 = 2x

x= -6/2

x = -3

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